Icon for a computer screen



FIG. 1 is a front perspective view of an icon for a computer screencomprising the present invention, the broken line drawing of a computerscreen is for illustrative purposes only and forms no part of theclaimed design; and,

FIG. 2 is a front view thereof, on an enlarged scale, the broken linedrawing of a computer screen is for illustrative purposes only and formsno part of the claimed design.

The ornamental design for a icon for a computer screen, as shown and described. 